SDR IPXA2025090243563

Service difficulty report · Warning Message · Boeing 7478F

Difficulty date: August 30, 2025
Submitted: September 2, 2025
Operation: Air carrier
Aircraft: N612UP
Make and model: Boeing 7478F
Aircraft serial: 64258
Aircraft time: 27,082 hours, 3,971 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Warning Message
Condition: Activated
Location: Cabin Pressure
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: B

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

**ATB** AT FL320 WE RECEIVED THE CABIN ALT WARING. THE CABIN ALT WAS 10,800. WE RAN THE CHECKLIST AND DESCENDED TO 14000. PERFORMED EXCESSIVE CABIN PRESSURE LEAKAGE TEST, LEAKAGE RATE FOUND TO BE WITHIN LIMITS, REF AMM 05-51-08-702-001. AIRCRAFT OK FOR CONT. SERVICE.

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